Alter Eco is a custom home builder, based in Paoli, Pennsylvania. Our design-build process provides architectural, construction management, and sustainable consulting services. Our approach is to seamlessly incorporate leading-edge building science to create cost-effective, high performance custom homes and high performance small-scale commercial buildings in any style.

Experts in green building, our capabilities are well-rounded and include experience building to the Zero Energy Ready Home (ZERH) program requirements set forth by the U.S. Department of Energy, Passive House Standards as certified through the Passive House Institute US (PHIUS), and Leadership in Energy and Environmental Design (LEED) green building certification standards.

Alter Eco is an award-winning builder recognized with several national and local awards for its Net Zero Energy Ready projects including the 2020 Housing Innovation Award bestowed by the U.S. Department of Energy. Alter Eco also received a 2020 Montgomery Award for the first Zero Energy Ready Homes housing development in Bridgeport, PA, recognized as promoting Montgomery County’s comprehensive plan, Montco 2040, to develop connected communities, sustainable places, and a vibrant economy. Also in 2020, Alter Eco was a finalist in both the AIA Philadelphia Design Awards, and in 2021, a finalist in the Urban Land Institute – ULI Philadelphia Awards for Excellence.

For anyone wanting to build a new construction home, this is the home of the future. Our homeowners love how clean and fresh the homes feel and rave about the low to no energy bills and ultra energy efficient home features. Standard code built homes simply cannot compete with the value high-performance homes provide, so it’s a ‘no-brainer’ for them when you can deliver it at a comparable cost.